Systematic review: Once an intervention that raises intelligence ends, the effects fade away http://www.sciencedirect.com/science/article/pii/S016028961500135X …
@AmirSariaslan Raises IQ scores, but probably/maybe not GCA, cf. http://emilkirkegaard.dk/sites/default/files/files/Are%20Headstart%20gains%20on%20the%20g%20factor_%20A%20meta-analysis.pdf … see also Jensen's http://arthurjensen.net/wp-content/uploads/2014/06/Raising-IQ-Without-Increasing-g-Review-of-Howard-L.-Garbers-The-Milwaukee-Project-Preventing-Mental-Retardation-in-Children-at-Risk-1989-by-Arthur-Robert-Jensen.pdf …
